1 Land contracts or contracts for deed are a security agreement between a seller, called a Vendor, and a buyer, called a Vendee.  The Vendor agrees to sell a property by financing the purchase for the Vendee.
The two DNA strands are held together by interchain hydrogen bonds. H-bonds pair the bases in one chain to the complementary bases in the other chain. (A/T and G/C).
What type of bonding holds the two poly nucleotide strands of a DNA molecule together? Hydrogen bonding between the complementary, nitrogenous bases (cytosine, guanine, thymine, adenine) of the two polynucleotide chains.